Rotary pump.



G. P. OBERGE.

ROTARY PUMP.

APPLIOATION FILED JAN. 18, 1912.

1,041,151. 1 I Patented Oct. 15, 1912 4 nu "L-19 aummto'c 8 r 8 ami rams Georgy F Obe 9 wxw- l &. 3. mm. M

UNITED STATES PATENT OFFICE.

GEORGE F. OBERGE, 0F HAVERFORD, PENNSYLVANIA, ASSIGNOR, BY MESNE ASSIGN- MENTS, 'I'O ETI-IEL ATTERIBU'RY OBERGE, OF HAVERFORD, PENNSYLVANIA.

ROTARY PUMP.

Specification of Letters Patent.

Patented Oct. 15, 1912.

'12) all whom it may concern:

Be it known that I, GEORGE F. Onnnon, a citizen of the United States, residing at Haverford, in the county of Montgomery and State of Pennsylvania, have invented certain new and useful Improvements in Rotary Pumps, of which the following is a specification, reference being had to the accompanying drawings.

This invention comprehends certain new and useful improvements in pumps 'of the class that embody a casing, a rotor eccentri-* cally mounted in the casmg and-radially movable vanes or blades carried by the rotor, and the invention has for its primary object a simple and eflicient construction of pump of this character which will possess a high degree of efficiency, which will be easy to construct and to maintain and not liable to get. out of order, and which will reduce to a minimum the friction between the stationary portion of the casing which is concentric theretoand the lding members that are carried by the ra ially movable or sliding vanes or blades of the rotor.

The invention has also for its object a pump of this type which will be positive in its action and at the same time reduce the friction upon the moving parts, the invention also aiming to generally improve this class of devices and to render them more useful and commercially desirable.

l/Vith this and other objects in view as will more fully appear as the description proceeds, the invention consists in certain constructions, arrangements and combinations of the parts that I shall hereinafter elevation thereof.

more fully describe and claim.

For a full understanding of the invention reference is to be had to the following description and accompanying drawing in which Figure 1 is a sectional view of a rotary pump embodying the improvements of my present invention. Fig. 2 is a transverse sectional view, the section being taken apof Fig. 1'. one of the Fig. 3 is a detail edge view of rotor; and Fig. 4 is an vanes or blades of the Corresponding and like parts are referred to in the following description and designated in the accompanying drawing by like reference characters.

Referring to the drawing the numeral 1 which may be disposed as judgment may direct.

2 designates the rotor which is mountedupon the drive shaft 3, said shaft being eccentrically journaled in the casing l and having the rotor 2 concentrically disposed thereon. The rotor 2 embodies a cylindrical rim and any desired number of connecting webs, said webs being, respectively, formed with radially disposed and peripherally opening guide channels 4 for the reception of the blades or vanes 5 that are radially slidable therein. In the present embodiment of the invention there are three vanes shown, but it is to be understood that this is'simply arbitrary and that the invention is not limited to this or to any number of vanes. Each of the vanes 5 is formed in one edge witha recess 6 the opposite walls of which are curved correspondingly as best illustrated in Fig. 3, the recesses ofthe vanes or blades being designed to accommodate guide members 7v which, in the present instance, are formed with cylindrical body portions and are at one end provided, respectively with relatively short studs 8 designed to fit within the reduced inner ends 9 of the recesses 6. Each guiding member 7 lies flush at its outer face with the adjoining edge of the vane or blade which carries it and may be of such a diameter that it will project beyond the opposite parallel side faces of the vane, as best illustrated in Fig. 3. This is rendered possible, owing to the fact that, as best illustrated in Fig. 2, the webs of the rotor in which the radially disposed channels 4 are formed, are cut away at the side adjoining the ridge 11 which is formed on one of the heads of the casing 1. Hence, a proper bearing is provided for the uiding members, while at the same time, riction is not increased, but will decrease, owing to the ,fact that by cutting away the webs at one "side, there is less surface area of said webs directly contacting with the head 1 which is provided with the rib 11. Each guiding member is formed on its outer face with a curved recess 10, the recesses of all the guiding members being designed for engagement medium, or when driven by the shaft 3 when used as a pump and not'a motor, the vanes or blades 5, owing to the engagement of their guiding members 7 with the annular rib 11 of the casing,will at all times be held properly with their outer ends in engage ment with the rim of the casing, so as to prevent leakage past the vanes or blades, and at the same timeinsure that friction at this point shall not be excessive. Owing to the construction and arrangement of the guiding members 7 and the rib 11, it is not necessary to thicken the head of the casing which carries the guiding element 11, or otherwise to reinforce or strengthen said head on its outer wall, and hence, space is economized without sacrificing strength and efiiciency. In their revoluble movement, the guiding elements 7 will'at all times accommodate themselves in position so as to avoid excessive friction between them and the rib 11, it being noted that the guiding members can turn freely in the recesses 6v in which they are seated. It will further be understood that no fastening devices are necessary to retain the guiding member 7 in place. Thus it will be seenthat I have provided a very simple, durable and'eflicient construction of rotary pump, the parts of which may be cheaply manufactured and readily assembled and which will not be liable to get out of order.

While the accompanying drawing discloses what I believe to be the preferred embodiment of my invention, it is to be understood that the invention is not limited thereto, but that various changes may be made in the construction, arrangement and proportion of the parts without departing from the scope of the invention as defined in the appended claims.

Having now fully described my invention, what I claim is.:-

1. A device of the class described, including a casing, a rotor eccentrically mounted in said casing and formed with a plurality of radially disposed guide channels, the casing a being provided on the inner wall of one head with an annular ridge concentric to the caschannels of the rotor and formed with recesses, and guiding members mounted to freely turn in said recesses and slidably engaging said ridge.

2. A device of the'class described, including a casing formed onthe inner wall of one head with a concentric transversely rounded ridge, a rotor mounted in said casing and formed with a plurality of radially disposed guide channels, vanes slidably mounted in said channels and each formed in one edge with a recess, and cylindrical guiding members mounted'in said recesses and flush with the adjoining edge of the vanes, the guiding members being formed with curved recesses adapted to fit over said ridge.

3. A device of the class described, including a casing, a rotoreccentrically mounted in said casing and provided with a plurality of radially disposed guide channels, vanes slidably mounted in said channels, the casing being provided on the inner wall of one head with a concentric transversely rounded ridge, the vanes being formed in one edge with recesses having reduced inner ends, and cylindrical guiding turn freely in said recesses and formedwith studs fitting in the reduced inner ends of the recesses, the guiding members being flush with one edge of the vanes and formed in their outer faces with curved recesses fitting over said ridge.

members mounted to vanes slidably disposed in the guide 4-. A device of the character described, in; v

cluding a casing, a rotor eccentrically mountfi ed in said casing and embodying a cylindrical rim, and a plurality of connecting webs formed, respectively, with radially disposed guide channels, vanes slidably mounted in said channels, the casing being provided on the inner wall of. one head wit-h a concentric ridge, the vanes-being formed in one edge with recesses having reduced inner ends and cylindrical guiding members mounted to turn freely in said recesses and formed with studs fitting in the reduced inner ends of the recesses, the guiding members being flush with one edge of the vanes and formed in their outer faces with curved recesses fitting over said ridge, the webs being cut away on one side adjoining the head of the casing which is formed with the ridge, whereby to provide clearance spaces for the said cylindrical guiding members.

In testimony whereof I hereunto affix my signature in the presence of two witnesses. GEORGE F. UBERGE; W1 tnesses Gno. S, Lrvmsscron, FREDERICK S. STITT. 

